a per flux 851 technical

PRESSURE REGULATOR

APERFLUX 851

TECHNICAL MANUAL MT049

INSTALLATION, COMMISSIONING AND MAINTENANCE INSTRUCTIONS

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01234

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6 7 8 7 6 54

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MAX

M I N

APERFLUX 851

INLET PRESSURE OUTLET PRESSURECONTROL PRESSURE

AR 73

304/A

302/A

Issue October 2002


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The PIETRO FIORENTINI SPA with registered office in Milan (Italy) – via Rosellini, 1, declares under its soleresponsibility that the apparatus series Aperflux 851 bearing the CE marking showed in this manual are designed,manufactured, tested and inspected in accordance with the provisions of Pressure Equipment Directive 97/23/EC(PED).

Following conformity assessment procedure has been carried out:

➤ EC type-examination (module B) by DVGW Forschungsstelle Richard – Wilstätter – Allee 5, 76131 Karlsruhe – report 02/140a/4301/855 issued 3rd May 2002. In this report both the versions incorporating the safetyshut-off devices series SB/82 or HB/97 when controlling overpressure and the monitor PM/819, areclassified as safety accessories according to clause 2.1.3 of art. 1 of PED.

➤ Production quality assurance (module D) by BUREAU VERITAS (ID n° 0062) – Attestation d’Approbationdu Système Qualité N° CE-PED-D-FIO001-02-ITA Rev. A issued 15th May 2002.

Further we declare that the classification of the performances characteristics has been verified by DVGWaccording to the procedures given by European standard EN 334 and/or by standard DIN 3381 and, only for the safetydevice HB/97, also according to the procedure given by prEN 14382. The classification is detailed in the aforesaidDVGW report.

Arcugnano 25/9/2002 The Pietro Fiorentini SpA

DECLARATION OF CONFORMITY


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GENERAL PRECAUTIONS

- The apparatus described in this manual is a device subject to pressure installed in systems under pressure;- the apparatus in question is normally installed in systems for transporting flammable gases (natural gas, for

example).

PRECAUTIONS FOR THE OPERATORS

Before proceeding with installation, commissioning or maintenance, operators must:- examine the safety provisions applicable to the installation in which they must work;- obtain the authorisations necessary for working when so required;- use the necessary means of individual protection (helmet, goggles, etc.);- ensure that the area in which they operate is fitted with the means of collective protection envisaged and with

the necessary safety indications.

HANDLING

The handling of the apparatus and of its components must only be carried out after ensuring that the lifting gearis adequate for the loads to lift (lifting capacity and functionality). The apparatus must be handled using the liftingpoints provided on the apparatus itself.Motorised means must only be used by the persons in charge of them.

PACKING

The packing for trasportation of equipment and of relevant spare parts are designed and shaped to avoid damage to anypart during transportation, warehousing and handling activities. Therefore the equipment and spare parts shall be keptinto their packing until their installation in the final site. After packing is open, check that no damage occured to anygoods. If damage occured inform the supplier and keep packing for any verification.

INSTALLATION

If the installation of the apparatus requires the application of compression fittings in the field, these must beinstalled following the instructions of the manufacturer of the fittings themselves. The choice of the fitting mustbe compatible with the use specified for the apparatus and with the specifications of the system when envisaged.

PRECAUTIONS


COMMISSIONING

Commissioning must be carried out by adequately trained personnel.During the commissioning activities, the personnel not strictly necessary must be ordered away and the no-goarea must be properly signalled (signs, barriers, etc.).Check that the settings of the apparatus are those requested; if necessary, reset them to the required values inaccordance with the procedures indicated in the manual.When commissioning, the risks associated with any discharges into the atmosphere of flammable or noxiousgases must be assessed.In installations in natural gas distribution networks, the risk of the formation of explosive mixtures (gas/air) insidethe piping must be considered.

CONFORMITY TO DIRECTIVE 97/23/EC (PED)

Pressure regulator Aperflux 851 are classified as fail open regulators according to the standard EN 334 thereforethey are pressure accessory according to directive 97/23/EC (PED).The incorporated safety device monitor PM/819 (as well as the in-line monitor REFLUX 819) being classified asfail close regulators according to the standard EN 334 is as safety accessory according PED, therefore it can beused both as pressure accessory and safety accessory to PED. The regulator Aperflux 851 when incorporatingslam shut valve SB/82 or HB/97 with pressure switches for overpressure is a safety accessory according to PED,therefore it can be used both as pressure accessory and safety accessory to PED.The conformity with Directive PED of pressure regulator and relevant accessory bearing the CE marking requiresinstallation in systems with minimum requirements according to EN 12286

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INDEX

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE 9

1.1 MAIN FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.2 OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.3 AR73 REGULATING VALVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131.4 SETTING SPRINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.0 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.0 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1 RELIEF VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173.1.1 DIRECT INSTALLATION IN THE LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183.1.2 INSTALLATION WITH ON/OFF VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.2 ACCELERATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.0 MODULARITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1 INCORPORATED SB/82 SLAM-SHUT VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.2 INCORPORATED SB/82 SLAM-SHUT VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.2.1 SB/82 SLAM-SHUT OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214.2.2 SB/82 SLAM-SHUT SETTING SPRINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234.3 INCORPORATED HB/97 SLAM-SHUT VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244.3.1 HB/97 OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254.3.2 HB/97 SLAM-SHUT SETTING SPRINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274.4 MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284.4.1 PM/819 INCORPORATED MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284.4.2 IN-LINE MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294.5 SETTING SPRINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.0 START UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315.2 GAS INPUT, CONTROL OF EXTERNAL TIGHTNESS AND SETTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325.3 COMISSIONING THE REGULATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335.4 COMMISSIONING THE REGULATOR WITH INCORPORATED SB/82 SLAM-SHUT . . . . . . . . . . . . . . . . . . . . . . 345.5 COMMISSIONING THE REGULATOR WITH INCORPORATED PM/819 MONITOR AND

ACCELERATING VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365.6 COMMISSIONING THE REGULATOR WITH REFLUX 819 IN-LINE MONITOR WITH INCORPORATED SB/82

SLUM-SHUT AND ACCELERATING VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375.7 COMMISSIONING THE REGULATOR PLUS APERFLUX 851 IN-LINE MONITOR WITH INCORPORATED

SB/82 SLAM-SHUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

6.0 TROUBLE-SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6.1 APERFLUX 851 REGULATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426.2 PM/819 MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436.3 REGULATOR SB/82 SLAM-SHUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

7.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

7.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457.2 APERFLUX 851 REGULATOR MAINTENANCE PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 467.3 PM/819 MONITOR MAINTENANCE PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 527.4 SLAM-SHUT DEVICE SB/82 MAINTENANCE PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

8.0 FINAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

8.1 THIGHTNESS AND SETTING CHECKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 618.2 START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

9.0 WEIGHT OF THE COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9.1 WEIGHT OF THE COMPONENTS IN KG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

10.0 LIST OF RECOMMENDED SPARES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65


This manual proposes to provide the essential information for the installation, start-up, disassembly, reassemblyand maintenance of the Aperflux 851 regulators.It is also appropriate, however, to provide a brief illustration of the main features of the regulator and of itscomponents.

1.1 MAIN FEATURES

The Aperflux 851 pressure regulator is a regulator of the piloted type for medium and high pressures.The Aperflux 851 is a fail open type regulator and therefore opens in the event of:- rupture of the main diaphragm;- rupture of the pilot diaphragm/s;- rupture of the pilot gasket;- pilot circuit supply failure.The main features of this regulator are:- design pressure: up to 100 bar;- design temperature: -20 °C to +60 °C;- environmental temperature: -20 °C to +60 °C;- range of the inlet pressure bpe: 1 to 80 bar;- possible regulation range Wh: 0.6 to 74 bar (on the basis of the pilot installed);- minimum differential pressure: 0.5 bar;- precision class AC= up to 1.5;- closing pressure class SG: up to 2.5.

1.2 OPERATION (FIG. 1)

In the absence of pressure, the main diaphragm 1 is maintained in the closed position by the spring 2 and restson the seat of the valve 3 with grill 4. The seal is guaranteed by the contact between the valve seat 3 and thediaphragm 1.In normal working conditions, the following forces act on the diaphragm 1:- downwards: the load of the spring 2, the thrust deriving from the control pressure Pc in the control chamber A

and the weight of the mobile assembly;- upwards: the thrusts deriving from the upstream pressure Pe and downstream pressure Pa and the remaining

dynamic components.The control pressure Pc is obtained by drawing gas at the pressure Pe directly upstream from the diaphragm 1;the gas is filtered by the filter 6 incorporated in the AR73 flow regulating valve. The pressure Pc is governed bythe pilot which regulates its value. Regulation is obtained from the comparison of the load of the setting spring8 and the thrust on the diaphragm 12 deriving from the downstream pressure.If during operation, for example, there is a drop in the downstream pressure Pa below the set point (as a result ofan increase in the flow demand or of a reduction of the upstream pressure) a state of imbalance of the mobileassembly 11 is created and leads to an increase in the opening of the obturator 7 and therefore a reduction of thecontrol pressure Pc.As a result, the diaphragm 1 moves upwards increasing the opening of the regulator until the downstreampressure reaches the set point again.On the other hand, when the downstream pressure rises beyond the set point (as a result of a reduction in thedemand or with the increase in the upstream pressure), the obturator 7 closes and therefore the pressure Pcreaches the value of the upstream pressure Pe. In these conditions, the diaphragm 1 goes to the closed position.In normal working conditions, the obturator 7 is positioned in such a way that the pressure Pc above thediaphragm 1 is such as to maintain the downstream pressure around the selected value.

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1.0 INTRODUCTION


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Fig. 1

Connections to be madeby the customer

Ref. No. for the connections

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11

302/A PILOT

Fig. 2A

vent

vent


12

304/A PILOT

Fig. 2B

vent


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1.3 AR73 REGULATING VALVE

The AR73 regulating valve is an adjustable flow regulation device. Its function is to adjust and differentiate theregulator's response times so as to optimize its operation.Small openings of the valve result in a greater regulating precision of the regulator, but also in a greater sensitivityto instability phenomena (pumping); the opposite is true in the case of larger openings.The opening is varied by turning the pin 4 with the reference mark which can be read on the graduated scale onthe front of the valve (fig. 3).The positions 0 and 8 on the scale indicate the minimum and maximum valve openings respectively. To pass fromone valve opening position to another, the pin can be turned clockwise or anticlockwise indifferently; the twograduated scales on the plate are in fact perfectly equivalent.

Fig. 3

Fig. 3a)Complete opening

Reference notch

Fig. 3b)Partial opening


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1.4 SETTING SPRINGS

The Aperflux 851 regulator uses the 302/A, 304/A, 305/A and 307/A pilots. The regulation range of the differentpilots is given in the tables below.

Tab. 2 304/A Pilot setting springs

Code Colour De Lo d i it Setting range in bar

2702290 RED 5.5 8.5 10.5 7 ÷ 12

2702460 GREEN 6 8.25 10.25 10 ÷ 17

2702660 BLACK 35 100 6.5 8.25 10.25 15 ÷ 25

2702820 BLUE 7 7 9 20 ÷ 35

2703045 BROWN 7.5 7.5 9.5 30 ÷ 43



2702820 BLUE 7 7 9 20 ÷ 35

2703045 BROWN 7.5 7.5 9.5 30 ÷ 43

2703224 GREY

35 100

8 7.5 9.5 40 ÷ 60



2703224 GREY 35 100 8 7.5 9.5 41 ÷ 74

The operating principle of the pilot has already been briefly illustrated in par. 1.2. Variation of the setting is obtainedby turning the adjustment screw 10 (fig. 1). Clockwise rotation leads to an increase in the regulated pressure whileanticlockwise rotation leads to a decrease. When the desired setting has been reached, the adjustment screw canbe blocked by means of the provided nut 9.

De = Ø external diameter d = Ø wire diameter i = active coils Lo = Lenght it = total coils



2701541 WHITE 4 7.75 9.75 0.8 ÷ 1.3

2701800 YELLOW 4.5 8.25 10.25 1.2 ÷ 2.1

2702080 ORANGE35 100

5 8.75 10.75 2 ÷ 3.3

2702290 RED 5.5 8.5 10.5 3 ÷ 4.8

2702460 GREEN 6 8.25 10.25 4.5 ÷ 7

2702660 BLACK 6.5 8.5 10.25 6 ÷ 9.5


2.1 GENERAL

Pressure regulator does not require any supplementary upstream safety accessory for protection againstoverpressure compared with its design pressure PS, when upstream reducing station is sized for a maxdownstream incidental pressure MIPd ≤ 1,1 PS.

Before installing the regulator it is necessary to ensure that:- the regulator can be inserted in the space provided and that subsequent maintenance operations will be

sufficiently practicable;- the upstream and downstream piping is at the same level and capable of supporting the weight of the regulator;- the inlet/outlet flanges of the piping are parallel;- the inlet/outlet flanges of the regulator are clean and the regulator itself has not been subject to damage during

transport;- the piping upstream has been cleaned to expel residual impurities such as welding scale, sand, paint residues,

water, etc.

The normally raccomended set-up is:

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2.0 INSTALLATION

Fig. 4 (Standard regulator)


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Regulator

Regulator

Pilot discharge

Control pressure gauge

Control pressure gauge

Pilot discharge

Bleed cock

Sensing line

Sensing line

Bleed chock

On/Off valve

On/Off valve

TAB. 5 CONNECTING THE APPARATUSES

The connections between the apparatus and the main piping must be made using stainless steel pipe withminimum internal diameter of 8 mm.

IN-LINE INSTALLATION

INSTALLATION AT RIGHT ANGELS


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1 and 2 Connect to regulators heads 3 and 4 Connect to pilots 5 and 6 Connect to accelerator and slam-shut

The regulator must be installed in the line with the arrow on the body pointing in the gas flow direction.It is indispensable for good regulation that the position of the downstream pressure take-offs and the speed of thegas at the take-off point respect the values given in tables 5 and 6 (positioning) and 7 (speed).The pressure regulator, when installed on a reducing station, shall be installed at least according to therequirements of standard EN 12186.All venting connections shall be connected as required by above mentioned standard.The following is recommended so as to prevent the accumulation of impurities and condensate in the lines of the pressure take-offs:a) the lines themselves must slope down towards the downstream piping connectors with a slope of about 5-10%;

b) the connectors on the piping must always be welded on the top of the piping itself and there must be no burror inward protrusions in the hole in the piping.

NB.WE RECOMMEND NOT TO PUT ON/OFF VALVES ON THE IMPULSE TAKE-OFFS

TAB. 6 DETAIL OF MULTIPLE TAKE - OFF WITH OF THE IMPULSE TAKE - OFF REFERENCE NUMBERS

TAB. 7The speed of the gas must not exceed the following values in the piping downstream from the regulator:

Vmax= 30 m/s for Pa > 5 barVmax= 25 m/s for 0,5 < Pa < 5 bar

3.0 ACCESSORIES

3.1 RELIEF VALVE

The relief valve is a safety device which releases a certain quantity of gas to the exterior when the pressure at thecontrol point exceeds the set-point as a result of short-lasting events such as, for example, the very fast closingof the on/off valves and/or overheating of the gas with zero flow rate demand. The release of the gas to the exteriorcan, for example, delay or block intervention of the slam-shut valve for transitory reasons deriving from damageto the regulator.


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Fig. 5

Obviously the quantity of gas released depends on the extent of the overpressure with respect to the set-point. Thedifferent models of relief valve available are all based on the same operating principle which is illustrated below withreference to the valve VS/AM 56 (fig. 5).It is based on the contrast between the thrust on the diaphragm 24 deriving from the pressure of the gas to beingcontrolled and the thrust from the setting spring 20. The weight of the mobile assembly, the static thrust and theresidual dynamic thrust on the obturator 4 also contribute to this contrast. When the thrust deriving from the pressure of the gas exceeds that of the setting spring, the obturator 4 is raisedand a certain quantity of gas is released as a result.As soon as the pressure drops below the set-point, the obturator returns to the closed position. Proceed asindicated below to control and adjust intervention of the relief valve.

3.1.1 DIRECT INSTALLATION IN THE LINE (FIG. 6)When the relief valve is fitted directly in the line, that is without inserting an on-off valve, proceed as follows:1) Ensure that the downstream on-off valve V2 and the bleed cock 6 are closed.2) Increase the pressure in the downstream section up to the value envisaged for intervention in one of the

following ways:- if the spring fitted on the pilot permits it (see tables 1-2-3-4), increase the setting of the pilot itself until thedesired value is obtained;- connect a controlled auxiliary pressure to the cock 6 and stabilize it at the desired value;

3) Check the intervention of the relief valve and adjust it if necessary by turning the adjustament plug 13appropriately (clockwise to increase and anticlockwise to decrease).

Fig. 6


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3.1.2 INSTALLATION WITH ON/OFF VALVE (FIG. 7)

1) Close the on-off valve 16.2) Connect a controlled auxiliary pressure to the nipple 17 and increase it slowly up to the value envisaged for

intervention.3) Check the intervention of the relief valve and adjust if necessary by turning the adjustament plug 13

appropriately (clockwise to increase and anticlockwise to decrease).

3.2 ACCELERATOR

An accelerator (fig. 8) is installed on the PM/819 icorporated monitor and on the REFLUX 819 regulator (use asin-line monitor) to speed up their intervention in the event of failure of the active regulator (racommended whenused safety accessory according to Directive 97/23/EC “PED”).On the basis of a pressure signal from downstream this device discharges the gas into the monitor's motorizationchamber into the atmosphere, thereby permitting rapid intervention. The set point of the accelerator mustobviously be higher than that of the monitor.Setting is made by turning the adjustment screw 17, clockwise to increase the value, anticlockwise to reduce it.M/A range of intervention Who: 0,3 to 43 bar

Fig. 8

vent

vent

Accelerator M/A

Fig. 7

01234

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6 7 8 7 6 54

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4.0 MODULARITY

The modular-type design of APERFLUX 851 series regulators means that it is also possible to feitner theemergency monitor regulator PM/819 or it the slam-shut incorporated with the body itself even after theinstallation of the regulator without any modifications.

4.1 INCORPORATED SB/82 SLAM-SHUT VALVE

When closing the slam shut incorporated into pressure regulator to be considered as safety accessory accordingto Directive PED, cuts off the feeding of gas both to pressure regulator and to its pilot.

4.2 INCORPORATED SB/82 SLAM-SHUT VALVE

This is a device (fig. 9) which immediately blocks the gas flow if, following some kind of failure, the downstreampressure reaches the set-point for its intervention, or is operated manually.On the APERFLUX 851 regulator, it is possible to have the SB/82 slam-shut incorporated both with the serviceregulator and on the one functioning as in-line monitor. The main characteristics of the slam-shut device are:• intervention with pressure increase and/or decrease;• design pressure: 100 bar for all the components;• intervention accuracy (AG): ± 1% of the pressure set-point for pressure increases; ± 5% for pressure drops;• manual resetting with internal by-pass operated by the resetting lever.

Fig. 9


21

4.2.1 SB/82 SLAM-SHUT OPERATION

The SB/82 slam-shut device (see fig. 10) consists of an obturator A, a releasing lever system, a control head Band a resetting system which is controlled manually by the lever C. The pressure in the circuit to control acts onthe diaphragm in the control head B. This diaphragm, which is integral with a control rod D, receives a counter-force by means of the minimum pressure springs 17 and the maximum pressure springs 11, set at the presetvalues .The translation movement of this rod provokes the displacement of the lever L which controls the release of theentire mobile system and frees the obturator which is closed by the action of the spring 48.To reset the device, operate the lever C. This opens an internal by-pass in the first part of its stroke. This leads tothe filling of the downstream zone and balances the pressure on the obturator. Then, complete resetting of theentire mobile system is obtained in the second part of the stroke of the lever C. Releasing can also be carried outmanually by means of the button 101.

Fig. 10


22

CONTROL DEVICE

SLAM-SHUT CONTROL HEADS

Fig. 11

Fig. 12

MOD. 102 -106 MOD. 103 -106

MOD. 104 -107 MOD. 105-108 - 109

Mod. 102 - 103 - 104 - 105 Mod. 106 - 107 - 108 - 109


23

4.2.2 TAB. 8 SB/82 SLAM-SHUT SETTING SPRINGS

1 2700565 WHITE 1 12 14

2 2700314 YELLOW 1,3 13 15 0,04 ÷ 0,1 0,2 ÷ 0,5

3 2700345 ORANGE 1,5 11 13 0,07 ÷ 0,2 0,4 ÷ 1,210 40

4 2700450 RED 1,7 11 13 0,15 ÷ 0,3 0,8 ÷ 2 1,6 ÷ 4 3,2 ÷ 8

5 2700495 GREEN 2 11 13 0,25 ÷0,45 1,4 ÷ 2,7 2,8 ÷ 5,4 5,6 ÷ 10,8

6 2700635 BLACK 2,3 10 12 0,40 ÷ 0,7 2,3 ÷ 4 4,6 ÷ 8 9,2 ÷ 16

Spring characteristics 102 106 102 106 103 107 103 107 104 108 104- 105 109 105-108 109

Code Colour De Lo d i it bar/min bar/max bar/min bar/max bar/min bar/max bar/min bar/max

7 2700790 ORANGE 2,5 8 10 0,1 ÷ 0,25

8 2701010 RED 3 7 9 0,2 ÷ 0,6 1 ÷ 3

9 2701225 GREEN 3,5 6 8 0,5 ÷ 1 2 ÷ 5

10 2701475 BLACK 25 55 4 6 8 0,7 ÷ 1,6 3,5 ÷ 8 7 ÷ 15 14 ÷ 30

11 2701740 VIOLET 4,5 6 8 1,3 ÷ 2,15 6 ÷10 12 ÷ 20 24 ÷ 30

12 2702015 AZURE 5 6 8 2 ÷ 3,25 9 ÷ 14 18 ÷ 28 36 ÷ 56

13 2702245 GREY 5,5 6 8 3,5 ÷ 5 13 ÷ 22 26 ÷ 44 52 ÷ 88

14 2700680 BROWN 2,3 6 8

15 2700830 RED/BLACK 2,5 5,5 7,5

16 2700920 WHITE/YEL. 2,7 5,5 7,5

17 2701040 WHI./ORAN. 3 5,5 7,5

18 2701260 WHITE 3,5 5,5 7,5 0,2 ÷ 0,5 0,2 ÷ 0,5

19 2701530 YELLOW 35 60 4 5 7 0,45 ÷ 1,10,45 ÷ 1,1 2 ÷ 5 2 ÷ 5

20 2701790 YEL./BLACK 4,5 4,5 6,5 0,7 ÷ 1,7 0,7 ÷ 1,7 3,5 ÷ 8,5 3,5 ÷ 8,5

21 2702070 ORANHE 5 5 7 0,9 ÷ 2 0,9 ÷ 2 5 ÷ 10,5 5 ÷ 10,5

22 2702280 WHI./RED 5,5 5 6,5 1,5 ÷ 3 1,5 ÷ 3 7,5 ÷ 15 7,5 ÷ 15 15 ÷ 30 30 ÷ 60

23 2702450 RED 6 5 7 2,2 ÷ 3,5 2,2 ÷ 3,5 10,5÷16,5 10,5 ÷16,5 21 ÷ 33 42 ÷ 66

24 2702650 GREEN 6,5 5 7 3,5 ÷ 5 3,5 ÷ 5 15 ÷ 22 15 ÷ 22 30 ÷ 44 60 ÷ 88


SETTING RANGE in bar

4.3 INCORPORATED HB/97 SLAM-SHUT VALVE

This is a device (fig.13) which immediately blocks the gas flow if, following some kind of failure, the downstreampressure reaches the set-point for its intervention, or is operated manually.On the Aperflux 851 regulator, it is possible to have the HB/97 slam-shut incorporated both with the serviceregulator or on the one functioning as in-line monitor.The main characteristics of the slam-shut device are:• balance valvue obturator;• indirect, self-fed, pneumatic actuation;• local close button;• interventation with pressure increase and/or decrease;• design pressure: 100 bar for all the components;• precision (AG): ±1% of the pressure set-point for pressure increases; ± 5% for pressure drops;• incorporated by-pass;• manual reset only;

24

01234

5

6 7 8 7 6 54

3

21

MAX

M I N

Fig. 13



4.3.1 HB/97 OPERATION (FIG. 14)

The cut-off device consist principally of the following parts:• on/off valve (pos. 12);• single action pneumatic actuator (pos. 11);• line-off device (from pos.1 until pos. 10);When there is no pressure, the valve obturator is held in the closed position by the spring, (pos. 13), and rests onthe valve seat. The control pressure is obtained by taking off gas at pressure Pe directly upstream from the valve.The gas passes through the valve (1) (which can deviate pressure towards the downstream piping through abypass line) and, appropriately filtered by the filter (2), enters the pressure regulator (4), the purpose of which isto stabilize the control pressure to the valve 3/2 (8) and then passes to the actuator (11). When the actuator isfiled, the valve opens.

25

Fig. 14


26

CONTROL DEVICE


Fig. 16

Mod. 103 - 104 - 105 Mod. 105/92

Mod. 103

Mod. 104 - 105

Fig. 15

27


4.3.2 TAB. 9 HB/97 SLAM-SHUT SETTING SPRINGS

1 2700513 RED 2 8.5 10.5 0.4 ÷ 1

2 2700713 GREEN 2.3 8.5 10.5 1 ÷ 1.9

3 2700750 BLACK 2.5 4.25 8.25 1.8 ÷ 2.8 4.7 ÷ 6.8 11 ÷ 16.515 40

4 2700985 YELLOW 3 6.5 8.5 2.7 ÷ 5 6.8 ÷ 20.6 16.5÷ 50

5 2701182 BLUE 3.5 6 8 45 ÷ 75

Spring characteristics SH1190/103 SH1190/104 SH1190/105 SH1190/105/92


6 2701260 WHITE 3.5 5.5 7.5 1.3 ÷ 2.1

7 2701530 YELLOW 4 5 7 2 ÷ 3.7

8 2701790 YEL./BLACK 4.5 4.5 6.5 3.6 ÷ 6.8 10 ÷ 17 25 ÷ 4135 60

9 2702070 ORANGE 5 5 7 5 ÷ 7.8 14 ÷ 19 34 ÷ 48

10 2702280 WHI./RED. 5.5 5 6.5 7.2 ÷ 11 17.2 ÷ 31.5 43 ÷ 76

11 2702290 BLUE 6 5.5 7 58 ÷ 85

Spring characteristics SH1190/103 SH1190/104 SH1190/105 SH1190/105/92






28

4.4 MONITOR

The monitor is an emergency regulator which takes over from the active regulator if for any reason the latterpermits the downstream pressure to rise up to the value set for its intervention.When pressure regulator Reflux 819 or incorporated monitor PM/819 are used as monitor, to increase responsetime an accelerato is installed. Installation of accelerator is recommended fo use as safety accessory according to Directive 97/23/EC (PED).Two alternative solutions are offered for this safety device associated to Aperflux 851 regulators: incorporatedmonitor or in-line monitor.

4.4.1 PM/819 INCORPORATED MONITOR

This emergency device (fig. 17) is fixed directly on the body of the service regulator. In this way, the two pressureregulators use the same valve body but:- they are governed by two distinct pilots and two independent servomotors;- they work on independent valve seats.

Fig. 17

01234

5

6 7 8 7 6 54

3

21

MAX

M I N


29

4.4.2 IN-LINE MONITOR

With this kind of application, the emergency regulator is installed upstream from the service one. Depending onthe specific requirements of the system, the regulator acting as monitor can be chosen between:- Reflux 819 regulator (fig. 18);- Aperflux 851 regulator, the same in all ways as the main regulator (fig. 19).

01234

5

6 7 8 7 6 54

3

21

MAX

M I N

APERFLUX 851

AR 73

204/A M/A

R14/A

REFLUX 819

302/A-304/A

01234

5

6 7 8 7 6 54

3

21

MAX

M I N

AR 73

01234

5

6 7 8 7 6 54

3

21

MAX

M I N

AR 73

APERFLUX 851

302/A-304/A 302/A-304/A

APERFLUX 851

Fig. 19

Fig. 18


30

Tab. 10 Pilot 204/A, 204/A/1


2701260 WHITE 3.5 7.5 7.5 0.3 ÷ 1.22701530 YELLOW 4 7 7 0.7 ÷ 2.82702070 ORANGE 5 7 7 1.5 ÷ 72702450 RED 35 60 6 7 7 4 ÷ 142702815 GREEN 7 7 7 8 ÷ 202703220 BLACK 8 6 6 15 ÷ 332703420 BLUE 8.5 6 6 22 ÷ 43

4.5 SETTING SPRINGS

Tab. 11 Pilot 205/A


2702820 BLUE 7 7 9 20 ÷ 35

2703045 BROWN 35 100 7.5 7.5 9.5 30 ÷ 432703224 GREY 8 7.5 9.5 40 ÷ 60

Tab. 12 Pilot 207/A

Code Colore De Lo d i it Setting range in bar

2703224 GREY 35 100 8 7.5 9.5 41 ÷ 74

The REFLUX 819 regulator and the monitor PM/819 uses the 204/A, 205/A and 207/A pilots. The regulation rangeof the different pilots is given in the tables below.



5.1 GENERAL

After installation, check that the inlet/output on-off valves, any by-pass and the bleed cock are closed.Before starting up, checking is recommended to ascertain that the conditions of use are in conformity with thespecifications of the equipment. These specifications are recalled with the symbols on the plate fitted on everycomponent (fig. 20).

5.0 START UP

31

Fig. 20

APPARATUS SPECIFICATION PLATES


The list of symbols used and their meanings are listed below:= According to Directive PED

Pemax= maximum inlet operating pressure of the apparatus

bpe= range of variability of the inlet pressure of the pressure regulator in normal operating conditions

PS= maximum pressure which can be supported by the structure of the body of the apparatus in safety conditions

Wa= range of setting of the pressure regulator/pilot/pre-regulator which can be obtained using the parts and thesetting spring fitted at the moment of testing (without changing any components of the apparatus, that is). Inpiloted regulators, the pilot is considered as a separate apparatus with its own setting range Wa

Wh= range of setting of the pressure regulator/pilot/pre-regulator which can be obtained using the setting springsindicated in the associated tables and also by changing some other part of the apparatus (reinforced gasket,diaphragms etc.). In piloted regulators, the pilot is considered as a separate apparatus with its own setting rangeWh

QmaxPemin= maximum flow rate with minimum pressure at the pressure regulator inlet

QmaxPemax= maximum flow rate with maximum pressure at the pressure regulator inlet

Cg= experimental coefficient of critical flow

AC= regulation class

SG= closing pressure class

AG= intervention accuracy

Wao= range of intervention for the over pressure of slam-shut, relief and safety valves and accelerators which canbe obtained using the setting spring fitted at the moment of testing. In the piloted safety valves, the pilot isconsidered as a separate apparatus with its own setting range Wao

Who= range of intervention for the over pressure of slam-shut, relief and safety valves and accelerators which canbe obtained using the setting springs indicated in the tables. In piloted safety valves, the pilot is considered as aseparate apparatus with its own setting range Who

Wau= range of intervention for pressure decrease of slam-shut pressure which can be obtained using the settingspring fitted at the moment of testing

Whu= range of intervention for pressure decrease of slam-shut pressure which an be obtained using the settingsprings indicated in the tables.

32

5.2 GAS INPUT, CONTROL OF EXTERNAL TIGHTNESS AND SETTING

The apparatus pressurization operation must be carried out very slowly. To protect the apparatus from damage,the following operations must never be carried out:- Pressurization through a valve located downstream from the apparatus itself. - Depressurization through a valve located upstream from the apparatus itself.External tightness is guaranteed if no bubbles form when a foam medium is applied on the element underpressure.The regulator and any other apparatuses (slam-shut, monitor) are normally supplied already set for thedesired set-point. It is possible for various reasons (e.g., vibration during transport) for the settings to be changedwhile remaining within the values permitted by the springs used. We therefore recommend checking the settings using the procedures illustrated below.Table 13 give the recommended set-points for the apparatuses in the various installation arrangements. Thefigures in these tables can be useful both when checking existing set-points and for modifying them should thisbecome necessary later.

5.3 COMMISSIONING THE REGULATOR (FIG. 21)

If there is also a relief valve in the line, refer to par. 3.1 the check it.

1) Open the bleed cock 6.2) Open the AR73 valve in position 8.3) Open the inlet on-off valve V1 very slowly.4) By means of the pressure gauge 5, check that the pressure does not exceed the maximum value permitted by

the setting spring fitted in the pilot. If necessary suspend the operation by closing V1 and completely reducethe load of the spring by turning screw 10 anticlockwise (fig. 22). Reopen valve V1 slowly.

5) Adjust the setting by alternately adjusting the AR73 regulating valve and the 30./... pilot so that the value ofthe set pressure is obtained with the minimum opening possible of the AR73 valve; then block the screw 10of the pilot with the provided nut 9 (fig. 22).

6) Close the bleed cock 6 and check that the downstream pressure, after a period of increase, stabilizes and ata slightly higher value than that of closure of the pilot/regulator combination. Otherwise eliminate the causesof the internal leakage.

7) Using a foam substance, check the tightness of all the joints between the on-off valves V1 and V2.8) Very slowly open the downstream on-off valve V2 to obtain the complete filling of the pipe. If at the beginning

of this operation the pressure in the pipe is much lower than the set point, the opening of this valve shouldbe choked so as not to go beyond the maximum flow value for the installation.

9) If pumping phenomena arise in normal working conditions, it is necessary to repeat the operations in point 5so as to readjust the setting, increasing the opening of the AR73 valve. If, on the other hand, there is anexcessive reduction of the regulated pressure with an increase in flow, repeat the above operations with asmaller opening of the AR73 valve.


33

In installations consisting of two lines, we suggest commissioning one line at a time, starting from the one withthe lower set-point, known as the “reserve” line. The set-points of the apparatuses in this line will obviouslydeviate from those specified in the table 13.

Before commissioning the regulator you must check that all the on/off valves (inlet, outlet, any by-pass) areclosed and that the gas is at a temperature which will not lead to malfunction.

Fig. 21

Fig. 22 - 30./...Pilot adjustment screw


5.4 COMMISSIONING THE REGULATOR WITH INCORPORATED SB/82 SLAM-SHU T (FIG. 23)

If there is also a relief valve in the line, refer to par. 3.1 to check it.

Check and adjust the intervention of the slam-shut 7 as follows:

A) For slam-shuts connected to the downstream piping by a three-way deviator push valve 11, proceed as follows(fig. 24):- connect a controlled auxiliary pressure to path C;- stabilise this pressure at the set-point established for the regulator;- insert the reference pin 2 in the notch, pressing the knob 1 completely;- reset the slam-shut device by means of the provided lever;- keep the knob 1 pressed:

•)for safety devices which intervention for maximum pressure: slowly increase the auxiliary pressure and checkthe intervention value. If necessary, increase the intervention value by turning the adjustment ring 14clockwise, or anticlockwise to reduce the intervention value.

•)for safety devices for pressure increase and reduction: slowly increase the auxiliary pressure and record theintervention value. Restore the pressure to the set-point established for the regulator, and carry out the slam-shut reset operation. Check intervention for pressure reduction by slowly reducing the auxiliarypressure. If necessary increase the intervention values for pressure increase or decrease by respectivelyturning the rings 14 or 15 clockwise and vice versa to reduce the intervention values.

-check proper operation by repeating the operations at least 2-3 times.

34

Fig. 23


35

B) On devices without the "push" valve (fig. 25) we recommend separately connecting the control head to acontrolled auxiliary pressure and repeat the operations described above.

Fig. 25

Fig. 24

Safety device

Euvironment with pressure to be checked

Chamber with controlled pressure

Safety device

Control position (A and C in communication)

Rest position (A and B in communication)

Euvironment with pressure to be checked

Chamber with controlled pressure


ATTENTION:

At the end of the operation, reconnect the control head to the downstream pressure take-off

N.B.: The intervention tests should be repeated at least every 6 months.

On completion of the slam-shut tests, proceed as follows:

1) Ensure that the slam-shut is in the closed position.2) Open the AR73 valve in position 8.3) Open the inlet on-off valve V1 .4) Open the slam-shut very slowly, turning the pro-vided lever clockwise.5) Open the bleed cock 6.6) Adjust the setting by alternately adjusting the AR73 regulating valve and the 30./... pilot so that the value of the

set pressure is obtained with the minimum opening possible of the AR73 valve; then block the screw 10 of thepilot with the provided nut 9 (fig. 22).

7) Close the bleed cock 6 and check that the downstream pressure, after a period of increase, stabilizes and ata lower value slightly higher than that of closure of the pilot/regulator combination. Otherwise eliminate thecauses of the internal leakage.


of this operation the pressure in the pipe is much lower than the set point, the opening of this valve should bechoked so as not to go beyond the maximum flow rate value for the installation.

10) If pumping phenomena arise in normal working conditions, it is necessary to repeat the operations in point 6so as to readjust the setting, increasing the opening of the AR73 valve.If, on the other hand, there is an excessive reduction of the regulated pressure with an increase in flow, repeatthe above operations with a smaller opening of the AR73 valve.

11) It is reccommended to check that the flow of the line stops when the slam-shut is tripped manually.

36

5.5 COMMISSIONIG THE REGULATOR WITH INCORPORATED PM/819 MONITOR ANDACCELERATING VALVE (FIG. 26)

If there is also a relief valve in the line, refer to par. 3.1 to check it.

Fig. 26 Fig. 27


37

1) Completely increase the setting of the pilot 3 by turning the ring 10 clockwise (fig. 22).2) Completely increase the setting of the accelerating valve by turning the adjustment screw 17 (fig. 8) clockwise.3) Close the AR73 valve in position 0.4) Partially open the bleed cock 6.5) Open the inlet on-off valve V1 very slowly.6) Adjust the setting of the pilot of the monitor 10 to the intervention value set for the accelerating valve 12 (see

table 13).7) Lower the setting of the accelerating valve until, using a foam, foam medium gas is seen to come out of the

discharge point.8) Lower the setting of the pilot 10 of the monitor to the selected working value of the monitor, ensuring that the

valve 12 is no longer discharging gas.9) Adjust the setting of the pilot 10 of the monitor to the set value.10) Open the AR73 valve in position 8.11) Reduce the setting of pilot 3 to the selected working value of the service regulator.12) Ascertain that the PM/819 monitor positions itself completely open, controlling the position of the stroke

indicator through the port (fig. 27).13) Adjust the setting by alternately adjusting the AR73 regulating valve and the 30./... pilot so that the value of

the set pressure is obtained with the minimum opening possible of the AR73 valve; then block the screw 10of the pilot with the provided nut 9 (fig. 22).

14) Close the bleed cock 6 and check that the downstream pressure, after a period of increase, stabilizes at a valuethan that slightly higher of closure of the pilot/regulator combination. Otherwise eliminate the causes of theinternal leakage.




5.6 COMMISSIONING THE REGULATOR WITH REFLUX 819 IN-LINE MONITOR WITHINCORPORATED SB/82 SLAM-SHUT AND ACCELERATING VALVE (FIG. 28)

If there is also a rilief valve in the line, refer to par. 3.1 to check it.

Fig. 28


Control and adjust slam-shut 7 operation as follows:

A) For slam-shut devices connected to the downstream piping by means of the three-way "push" valve 11,proceed as follows (fig. 24):- connect a controlled auxiliary pressure to path C;- stabilize this pressure at the regulator set point value;- insert the reference pin 2 in the notch, pressing knob 1 completely;- rearm the slam-shut by means of the provided lever;- keep the knob 1 pressed and:

•)for safety devices which intervene for maximum pressure: slowly increase the auxiliary pressure and check the intervention value. If necessary, increase the trip value by turning the adjustment ring 14 clockwise, or vice versa to reduce the value;

•)for safety devices for pressure increase and decrease: slowly increase the auxiliary pressure and record the intervention value. Bring the pressure back to the regulator set point value and rearm the slam-shut. Check operation for pressure decrease by slowly reducing the auxiliary pressure. If necessary, increase the trip value for pressure increase or decrease by turning the rings 14 or 15 respectively clockwise; vice versa to reduce the value;

- check proper operation by repeating the operations at least 2-3 times.

B) On devices without the "push" valve, it is advisable to connect the control head separately to a controlledauxiliary pressure and repeat the operations described above (fig. 25).

ATTENTION

at the end of the operation, reconnect the control head to the downstream pressure take-off.



1) Ensure that the slam-shut is in the closed position.2) Open the inlet on-off valve V1 very slowly.3) Completely increase the setting of the pilot 3 by turning the screw 10 clockwise (fig. 22).4) Close the AR73 valve in position 0.5) Completely increase the setting of the accelerating valve by turning the adjustment screw 17 (fig. 8) clockwise.6) Open the slam-shut very slowly, turning the pro-vided lever clockwise.7) Partially open the discharge cock 6.8) Adjust the setting of the pilot of the monitor 10 to the intervention value set for the accelerating valve 12 (see

table 13).9) Lower the setting of the accelerating valve until, using a foam, gas is seen to come out of the discharge point.10) Lower the setting of the pilot 10 to the selected working value of the monitor, ensuring that the valve 12 is no

longer discharging gas.11) Adjust the setting of the pilot of monitor 10 to the set value.12) Open the AR73 valve in position 8.13) Reduce the setting of pilot 3 to the selected working value of the service regulator.14) Ascertain that the REFLUX 819 monitor positions itself completely open, controlling the position of the stroke

indicator through the port (fig. 27).

38


39

15) Adjust the setting by alternately adjusting the regulating AR73 valve and the 30./... pilot so that the value ofthe set pressure is obtained with the minimum opening possible of the AR73 valve; then block the screw 10of the pilot with the provided nut 9 (fig. 22).

16) Close the vent cock 6 and check that the downstream pressure, after a period of increase, stabilizes and at alower value than that of closure of the pilot/regulator combination. Otherwise eliminate the causes of theinternal leakage.




20) It is reccomended to check that the flow of the line stops when the slam-shut is tripped manually.

5.7 COMMISSIONING THE REGULATOR PLUS APERFLUX 851 IN LINE MONITOR WITH INCORPORATED SB/82 SLAM-SHUT (FIG. 29)

Fig. 29

Control and adjust slam-shut 7 operation as follows:A) For slam-shut devices connected to the dowstream piping by means of the three-way "push" valve 11, proceed

as follows (fig. 24):- connect a controlled auxiliary pressure to path C;- stabilize this pressure at the regulator set point value;- insert the reference pin 2 in the notch, pressing knob 1 completely;- rearm the slam-shut by means of the provided lever;- keep the knob 1 pressed and:• for safety devices which intervene for maximum pressure: slowly increase the auxiliary pressure and check the intervention value. If necessary, increase the trip value by turning the adjustment ring 14 clockwise, or vice versa to reduce the value;• for safety devices for pressure increase and decrease: slowly increase the auxiliary pressure and record theintervention value. Bring the pressure back to the regulator set point value and rearm the slam-shut. Check operation for pressuredecrease by slowly reducing the auxiliary


pressure. If necessary, increase the intervention value for pressure increase or decrease by turning the rings14 or 15 respectively clockwise; vice versa to reduce the value.- check proper operation by repeating the operations at least 2-3 times.

B) With devices without the "push" valve, it is advis-able to connect the control head separately to a controlledauxiliary pressure and repeat the operations described above (fig. 25).

ATTENTION

at the end of the operation, reconnect the control head to the downstream pressure take-off.



1) Ensure that the slam-shut is in the closed position.2) Open the AR73 (9) valve of the monitor in position 8.3) Close the AR73 valve of the service regulator in position 0.4) Open the inlet on-off valve V1 very slowly.5) Completely increase the setting of the pilot 3.6) Open the slam-shut very slowly, turning the pro-vided lever clockwise. 7) Partially open the discharge cock 6.8) Using the pressure gauge 5, check that the downstream pressure settles at the value of the monitor set point.

Adjust the setting by alternately turning the adjustment screw of the pilot 10 and the AR73 regulating valve sothat the value of the set pressure is obtained with the minimum opening possible of the AR73 valve.

9) Open the AR73 (2) valve of the service regulator in position 8.10) Slowly reduce the set-point of the pilot 3 to the set point of the service regulator.11) Repeat the operations in point 8 for the pilot 3 and the valve 2.12) Wait until the downstream pressure settles at the desired value and adjust it as described in point 8.13) Close the bleed cock 6 and check that the downstream pressure, after a period of increase, stabilizes at a value

slightly higher than that of closure of the pilot/regulator combination. Otherwise eliminate the causes of theinternal leakage.


of this operation the pressure in the pipe is much lower than the set point, the opening of this valve should bechoked so as not to go beyond the maximum flow value for the installation.

16) If pumping phenomena arise in normal working conditions, it is necessary of repeat the operations in point 8so as to readjust the setting, increasing the opening of the AR73 valve.If, on the other hand, there is an excessive reduction of the regulated pressure with an increase in flow, repeatthe above operations with a smaller opening of the AR73 valve.

17) It is recommended to check that the flow of the line stops when the slam-shut is tripped manually.

40


41

TAB. 13: Settings of in-line apparatuses consisting of Regulator APERFLUX 851 + Monitor + Slam-shut + Relief valve

Set-point Set-point Set-point Set-point Set-point Set-point

Regulator MONITOR ACCELERATING RELIEF-VALVE SLAM-SHUT Max SLAM-SHUT Min

(Pas) bar VALVE

0.8<Pas>2.1

2.1<Pas>5

5<Pas>25

25<Pas>60

Pas x 1.1

Pas x 1.1

Pas x 1.05

Pas x 1.03

Pas x 1.2

Pas x 1.1

Pas x 1.06

Pas x 1.3 Pas x 1.5

Pas x 1.3

Pas x 1.15

Pas x 1.15

Pas x 1.2 Pas - 0.3 bar

Pas - 0.5 bar

Pas - 3 bar

Pas - 5 bar

Pas x 1.4

Pas x 1.3

Pas x 1.3


42

6.0 TROUBLE-SHOOTING

The problems of various kinds which could arise over time are highlighted below. They derive from phenomena associated with the conditions of the gas as well, of course, as the natural ageingand wear of the materials.It must be remembered that all operations on the apparatuses must be carried out by highly qualified personnelwith appropriate knowledge of the subject. Tampering with the apparatuses by unsuitable personnel relieves usfrom all responsibility of any kind.You must therefore train your maintenance personnel or avail yourself of the service centres officially authorisedby us.

6.1 TAB. 14 APERFLUX 851 REGULATOR (FIG. 30, 31 and 32)

PROBLEM POSSIBLE CAUSES APPARATUS REMEDY

Unsuitable pressure at the AR73 (fig. 32) Adjust the flow rateregulator

Diaphragm-holder assembly Centre the moviment of hole,friction assembly and shaft

Worn diaphragm [16] 302/A PILOT (fig. 32) Replace

Operating anomalies Worn diaphragm [49] Replace

Spring [22] yielded or off level Replace

Worn diaphragm [20] Replace

Worn [20] off level REGULATOR (fig. 30) Check

Incorrect [45] spring Replace

Obturator [17] worn 302/A PILOT (fig. 32) Replace

Tightness failure Q= OWorn diaphragm [20] ReplaceREGULATOR (fig. 30)Diaphragm [20] off plane Replace

Filter [11] cartridge dirty AR73 (fig. 32) Replace

Pressure increase with Q>O Obturator [17] worn Replace302/A PILOT (fig. 32)

Worn diaphragm [49] Replace


6.2 TABELLA 15 PM/819 MONITOR (FIG. 33 and 34)

43


Incorrect adjustment AR73 (32) Adjust

Formation of ice on the valve Increase the pilot circuit gasinput temperature

302/A PILOTA (fig. 32)Valve obstructed by dirt Clean and check the AR73 filter

Pressure drop cartridge

No pressure upsteam Check the line filter cartridge fordirt

REGULATOR (fig. 30)Formation of ice Increase regulator input

temperature


Guide ring [20] damaged ReplaceR14/A PREREGULATOR

Diaphragm [10] ruptured (fig. 34) Replace

Obturator [17] damaged Replace

Obturator [17] stuck in the Control and clean if necessaryopen position 204/A PILOT (fig. 34)

Spring yielded [21] Replace

Pressure Reinforced gasket [7] damaged Replaceincrease with Q>0

Ice formation between the Increase the gas temp. at the reinforced gasket regulator and the plug inlet

Dirt between the reinforced gasket Clean and check gas filteringand the obturador

Obturator blocked REGULATOR (fig. 33) Clean and check movement

Diaphragm fixed incorrectly Fix

Downstream sensing line dirty Clean

Occlusion of pressure chamber Cleanvent nozzle

Obturator guide ring [35] damaged Replace

Feed too low Replace the spring [12]

Filter cartridge [13] dirty Replace

Occlusion by frost Increase temp. at the preregulator inlet

Occlusion by dirty Check cartridge [13] filtering level Pressure drop R14/A PREREGULATOR (fig. 34)

Diaphragm [10] ruptured Replace

Reinforced gasket [9] swollen Replace

Pilot feed line broken Repair

Diaphragm [16] ruptured Replace204/A PILOT (fig. 34)

Motorisation line to the Repairregulator broken

Obturator blocked Clean and check movement

Diaphragm [50] ruptured ReplacePressure drop

Guide ring [36] damaged ReplaceREGULATOR (fig. 33)

Breakage or leakage from vent Repairnozzle calibrated hole screw

Repair

No pressure upstream Check cleanliness of line filter cartridges


44


Slam-shut obturator does not close Control head diaphragm [4] broker Change diaphragm

Seal of obturator [40] deteriorated Change seal

Leakage from slam-shut obturatorSeat of obturator deteriorated Change the seat

Seal by-pass [19] deteriorated Change seal

Wrong max. and/or min. spring setting Make the setting again by means of the rings

Incorrect intervention pressureFriction in the lever mechanism Change the box containing the whole assembly

Persistence of the cause of the increase or Decrease or increase the downstream pressuredecrease of the downstream pres.

Resetting not possible

Lever mechanism broken or cracked Change the standard box containing theassembly outside the regulator

6.3 TAB. 16 SB/82 SLAM-SHUT (FIG. 35)

N.B. If the slam-shut has intervened, close the inlet and outlet valve (V1 and V2) on the line and discharge thepressure before carrying out any operation.Eliminate the causes which gave rise to intervention before reactivating it.

In the event of operating problems when personnel qualified for a specific operation are not available, call theservice centre nearest to you. For further information contact our SATRI service centre at our Arcugnano (VI)works.

PROBLEM POSSIBLES CAUSES REMEDY


45

7.1 GENERAL

Periodical inspection and maintenance shall be carried out according to the regulations in force (kind andfrequencies). Before carrying out any operation it is important to ascertain that the regulator has been cut off bothupstream the regulator and the on/off valves.The maintenance operations are closely associated with the quality of the gas transported (impurities, humidity,gasoline, corrosive substances) and with the efficiency of the filtering.Preventive maintenance should be carried out at intervals which, if not established by regulations in force, dependon:- the quality of the gas transported;- the cleanliness and conservation of the piping upstream from the regulator: in general, for example, when

starting the equipment for the first time, more frequent maintenance is required because of the precarious stateof cleanliness inside the piping;

- the level of reliability required from the regulation system.Before starting the disassembly operations on the apparatus you should check that:- a set of recommended spares is available. The spares must be original Fiorentini ones, bearing in mind

that the more important ones such as diaphragms are marked - A set of wrenches is available as specified in tables 17 and 18.

For a proper maintenance the reccomended spare parts are unequivocally identified by labels indicating:

- The No of assembly drawing SR of the apparatus for which the spare parts are suitable,- The position showed in the assembly drawing SR of the apparatus

N.B. The use of non-original spare parts relieves us of all responsibilities.

In the maintenance is carried out by your own authorized personnel, we reccomend putting reference markings,before the disassembly, on those parts which could have directional or reciprocal positioning problems whenreassembling. Finally, we would remind you that O-Rings and sliding mechanical components (rods, etc.) must belubricated, before the re-assembly, with a fine layer of silicone grease. Before re-commissioning of equipmentafter maintenance, external tightness shall be verified at a proper to assure no external leakage. When equipmentis used as safety accessory to PED, internal sealing at the maximum expected operating pressure. Bothverifications are essential to assure safe use at foreseen operating conditions; they have, anyhow, to comply withthe national regulations in force.

7.0 MAINTENANCE


46

7.2 APERFLUX 851 REGULATOR MAINTENANCE PROCEDURE

Fig. 30


47

Fig. 31


48

302/A PILOT

AR73 FLOW REGULATION VALVE

Fig. 32


49

PRELIMINARY OPERATIONS

A. Put the regulator into conditions of safety;B. Ensure that the upstream and downstream pressures are 0.

INITIAL OPERATIONS1) Disconnect all the pilot and regulator feed and sensing line connections, by unscrewing the taper seal

connectors.2) Slacken the fixing nut of the bracket, pos. , which fix the pilot to the regulator.3) Remove the 302/A+AR73 pilot assembly from the regulator.

REGULATOR DISASSEMBLY

4) Slacken the eyebolt, pos. , and the remaining fixing screws, pos. .5) Remove the top cover, pos. .6) Remove the spring, pos. , along with the diaphragm support assembly.7) Separate the diaphragm protection plate, pos. , from the screw, pos. ,and the diaphragm, pos. ,

slackening the nut, pos. .8) Remove the intermediate flange, pos. , along with the diaphragm protection grill, pos. .9) Remove the valve seat, pos. .9a)* Slacken the fixing screws, pos. of the flange, pos. , and remove it from the body of the regulator.10) Slacken the fixing screws, pos. , of the bottom blind flange, pos. .11) Remove the bottom blind flange, pos. .12) Slacken the fixing screws, pos. , of the lock ring, pos. , of the reinforced gasket, pos. .13) Remove the lock ring, pos. , the reinforced gasket, pos. , and the sleeve, pos. .14) Check and clean the inside of the regulator body.15) Carefully check that the valve seat is in good condition.16) Replace all the parts from the spare parts kit.* Only for version 3”÷ 10”

REGULATOR REASSEMBLY

The O-rings and sliding mechanical parts (rods, etc.) must be lubricated lightly before reassembly with a thinlayer of silicone grease. Static parts must be greased to make them more tender but mainly so that they willbe held in their slots.

17) Reassemble the reinforced gasket, pos. , and the lock ring, pos. , and fix the screws, pos. , of the ring itself.

Procedure for the disassembly, complete replacement of spares parts and reassembly of the“APERFLUX 851” pressure regulator with 302/A pilot + AR73 (PROGRAMMED PREVENTIVEMAINTENANCE)

14

48 24

4

45

15 201430

3

1326 2

17

25 55

27 6 7

6 97

7 6 27


18) Reassemble the bottom blind flange, pos. , and fix the screws, pos. .18a)* Reinstall the flange, pos. , on the body of the regulator and fix the screws, pos. .19) Reassemble the valve seat, pos. .20) Reassemble the intermediate flange, pos. , along with the diaphragm protection grill, pos. .21) Reassemble the diaphragm support assembly, fixing the nut, pos. .22) Put the diaphragm support assembly, the spring, pos. , and the top cover, pos. , back on the regulator.23) Screw in and fix the screws, pos. , and the eyebolts, pos. .* Only for version 3”÷ 10”

DISASSEMBLY OF THE PILOT ASSEMBLY

24) Disconnect the connection nipples between the 302/A pilot and the AR73 flow regulator valve, unscrewingthe tapered seal connectors.

SMONTAGGIO PILOTA 302/A

25) Slacken the lock nut, pos. .26) Slacken the setting screw, pos. , turning it anticlockwise as far as it goes.27) Remove the pilot plug, pos. .28) Remove the spring support, pos. , the spring, pos. , and the spring support, pos. , from the pilot.29) Slacken the screws, pos. , and remove the sleeve, pos. , and the pilot bracket, pos. .30) Slacken the nut, pos. , and remove the protection plate, pos. and the bottom diaphragm, pos. ,

from the diaphragm support, pos. .31) Slacken the screws, pos. , and remove the pilot top flange, pos. , along with the spring, pos. .32) Remove the downstream impulse diaphragm assembly, pos. , , , , , and the ring, pos. .33) Separate the impulse diaphragm assembly, unscrewig the nut, pos. .34) Unscrew the pilot nut, pos. , and remove it along with the spring, pos. , and the obturator,

pos. .35) Slacken the screws, pos. , and remove the bottom flange, pos. , the protection plate, pos. ,

and the diaphragm, pos. .36) Slacken the nut, pos. , and remove the shaft of the valve seat, pos. , from the pilot body, pos. .37) Carefully check that the valve seat is in good condition and, in particular, the modulating piston, pos. .38) Change all the parts included in the spare parts kit.

REASSEMBLING THE 302/A PILOT

39) Reassemble the shaft of the valve seat, pos. , on the pilot body, pos. , with the interposition of thediaphragm support, pos. .

40) Screw in and tighten the nut, pos. .41) Reassemble the bottom diaphragm, pos. , and the protection plate, pos. , on the diaphragm support,

pos. , and screw in the nut, pos. .42) Insert the pilot obturator, pos. , the spring, pos. , the diaphragm, pos. , and the protection plate,

pos. .43) Screw in the pilot nut, pos. .44) Check and centre the diaphragm support, pos. .

50

5 25

2 2613

13

3 17

30

45 423 48

910

8

5

15 16

23 1 20

44 46

44

49 47 35 12

6 14

25

7 2224

1724

2 21

16

4811

25 43

39

43

5

255

16

25

15

17 21 16

48

2

5


45) Reassemble the bottom flange, pos. , on the pilot body pos. and fix the screws, pos. .46) Reassemble the impulse diaphragm assembly, screwing in the nut, pos. .47) Reassemble the ring, pos. , the impulse diaphragm assembly, the spring, pos. , and the pilot top

flange, pos. , and fix the screws, pos. .48) Reassemble the sleeve, pos. , and the pilot bracket, pos. , on the valve body, pos. , and fix by

screwing in the screws, pos. .49) Position the spring support, pos. , the spring, pos. , and the spring support, pos. , and fix the

pilot plug, pos. .

DISASSEMBLING THE AR73 FLOW REGULATOR VALVE

50) Unscrew the filter plug, pos. , from the valve sleeve, pos. .51) Slacken the fixing screws, pos. , and separate the valve body, pos. , from the valve sleeve, pos. .52) Change all the parts included in the spare parts kit.

REASSEMBLING THE AR73 FLOW REGULATOR VALVE

53) Refit the valve body, pos. , to the valve sleeve, pos. , and fix the screws, pos. .54) Screw the filter plug, pos. , to the valve sleeve, pos. .

REASSEMBLING THE PILOT ASSEMBLY

55) Reconnect the connection nipples between the 302/A pilot and the AR73 flow regulator valve, screwing in thetaper seal connectors.

FINAL OPERATIONS

56) Fit the 302/A pilot + AR73 assembly onto the regulator.57) Fix the nut of the bracket fixing the pilot to the regulator.58) Reconnect all the feed and sensing line connectors, screwing in the taper seal connectors.

51

411 24

4 6 14

24

13 22 7

8

2312012

14

13

15

9 1

13

1 13 9

1315


52

7.3 PM/819 MONITOR MAINTENANCE PROCEDURE

Fig. 33


53

VERSIONS

Fig. 33/A


54

204/A + R14/A PILOT

Fig. 34

INLETDOWNSTREAM

PRESSURE

PILOT FEEDR14/A


55

PM/819 MONITOR (FIG. 33)

1) Disconnect the connection pipes between the regulator and monitor and the respective pilot units, andbetween the latter and the downstream pressure take-offs.

2) Remove the screws which secure the reduction assembly of the monitor to the body, making surethat the weight of the reduction assembly itself can be sustained. When removing the assembly from thebody, the maximum care must be taken so as to avoid denting the sealing edge of the obturator .

3) Lay the reduction assembly on one side.4) Slacken the lock nut, , fixing the obturator, to the rod , and remove the obturator,

from the obturator guide .5) Completely slacken the spring, , by unscrewing the lock nut, .6) Remove the screws and the nuts from the obturator guide .7) Raise the top cover with the flange and the indicator rod guide . To separate the three parts,

unscrew the screws .8) Separate the parts and making use of the flat faces on the piston guide and the holes on the

disc .9) Raise the assembly composed of the diaphragm and the discs , and ; disassemble the

diaphragm by removing the screws .10) Remove the stem from the side of the cover.11) Disassemble the bottom cover by removing the screws , and remove the stem guide .

Take the following precautions during reassembly:

- the bottom cover should be fixed to the obturator guide in such a way that the hole of the

motorization pressure passage mates with the similar hole on the obturator guide itself;

- when assembling the assembly consisting of the diaphragm and the guard discs, check that the

hole with the nozzle on disc is aligned with the hole on disc ; also check that the hole on nozzle

is free from dirt and foreign bodies;

- when assembling the assembly composed of the top cover with the flange and the indicator rod

ensure that the washer of the indicator rod is correctly fitted between the disc and the piston

guide and that it does not obstruct the hole in disc ; it should all be turned in such a way that the

indicator port is completely visible;

- before securing the lock nut , check that the spring is properly housed in the special centring beat

on the obturator guide .

DISASSEMBLING THE PILOT ASSEMBLY

1) Disconnect the connection nipples between the pilot 204/A and the preregulator R14/A, unscrewing thetapered seal connectors.

88 90

5

33 6 7171

7080 9

25 26 2

3 14 17

27

13 11

13

10 12 1350

23506

3

3 2

27 20

11

50

13 10

21

3 14

18

1311

13

9 54

2


56

DISASSEMBLING THE 204/A PILOT (FIG. 34)

2) Slacken the lock nut .3) Slacken the adjustment screw for its complete stroke by turning it anticlockwise.4) Remove the pilot plug .5) Remove the spring support , the spring and the spring support from the pilot.6) Slacken the screw and remove the sleeve and the pilot bracket .7) Unscrew the lock nut, and remove the protection disc and the bottom diaphgram .8) Slacken the screws and remove the pilot cover along with the spring .9) Unscrew the pilot nut and remove the spring , the pilot obturador , the protection disc

and the top diapragm .10) Unscrew the lock nut from the valve seat .11) From the pilot body remove the shaft of the valve seat along with the diaphragm support .12) Clean and carefully check that the valve seat is in good condition.13) Replace all the components which are part of the spare parts kit.

REASSEMBLING THE 204/A PILOT

14) On the pilot body , reassemble the shaft of the valve seat , putting the diaphragm support between them.

15) Screw and tighten the nut .16) Reassemble the bottom diaphragm , and the protection disc and screw in the pilot lock nut . 17) Insert the pilot obturator , the spring , the top diaphragm and the protection disc .18) Screw in the pilot nut .19) Check and centre the diaphragm support .20) Reassemble the pilot cover along with the spring and fix the screws .21) Reassemble the sleeve and the pilot bracket on the pilot body and secure it by screwing in the

screws mm. 22) Position the spring support , the spring ,and the spring support and fix the pilot plug

.

DISASSEMBLING THE R14/A PREREGULATOR (Fig.34)

23) By slackening the screws , remove the cover , from the preregulator body .24) Remove the diaphragm obturator assembly and the spring .25) Separate the diaphragm assembly and ob-turator , by unscrewing the lock nut .26) Unscrew the preregulator plug .

910

87 22

6 1424

24

25 5

15

161 20

2 21 17

16

13

25

4 3 5

3

4 35

25

5

16 15 25

17 21

16

1518

22

20 1 24

414624

13 7 8

5

12

10 5

4

12


27) From the preregulator body , remove the preregulator plug , the reinforced gasket ,the filter , the obturator guide and the guide ring .

28) Clean and carefully check that the obturator is in a good state.29) Replace all the components which are part of the spare parts kit.

REASSEMBLING THE R14/A PREREGULATOR

30) Reassemble the filter-shaft guide assembly.31) Screw in the preregulator plug .32) Reassemble the diaphragm-obturator assembly.33) Reassemble the spring and the diaphragm-obturator assembly and fix the cover , securing the

screws .

REASSEMBLING THE PILOT ASSEMBLY

34) Reconnect the connection nipples between the pilot 204/A and the preregulator R14/A screwing in thetapered seal connectors.

57

41 913 3 8

4

2

15

5


58

7.4 SLAM-SHUT DEVICE SB/82 MAINTENANCE PROCEDURE

VERSIONS

Fig. 35


59


MOD. 102 -106 MOD. 103 -106

MOD. 104 -107 MOD. 105-108 - 109


60

SB/82 SLAM-SHUT (FIG. 35)

1) Check that the slam-shut is in the closed position.2) Disconnect the pipe between the downstream pressure take-off and the head of the slam-shut pressure

switch.3) Slacken the fixing screws, pos. , so as to partially slacken the spring, pos. ; before removing them

completely, ensure that you can support the wright of the slam-shut device adequately.4) Remove the screws and separate the slam-shut from the body, pos. .5) Put the slam-shut on its side.6) Unscrew the screws, pos. , and remove the obturator, pos. , and the spring, pos. .7) Unscrew the ring, pos. , and the ring, pos. , from the obturator, pos. .8) Keeping the shaft, pos. firm, slacken the screw, pos. .9) Remove the ring, pos. , and the spring, pos. .10) Remove the retaining ring, pos. and the shaft guide, pos. .11) Slacken the screws, pos. , from the pressure switch device, and remove the cover, pos. .Replace all the components included in the spare parts kit.

RE-ASSEMBLY

12) Fit the cover, pos. , and fix the screws, pos. on the pressure switch device.13) Put back the shaft guide, pos. and fix it with the retaining ring, pos. .14) Put back the spring, pos. and the ring, pos. , and fix the screw, pos. .15) Put back the rings, pos. and pos. on the obturator, pos. .16) Put back the spring, pos. and the obturator, pos. , fixing the screws, pos. .17) Put the slam-shut device back on the body, pos. and fix the screws, pos. .18) Restore the connection between the downsteam pressure take-off and the head of the slam-shut pressure

switch.

36 48

9

3 2 47

2181

6 264 48

28 10

2 1

21

10 28

48 4 26

2

1 18 2

39 36

47


8.0 FINAL OPERATIONS

8.1 TIGHTNESS AND SETTING CHECK

1) Very slowly open the on/off valve upstream from the regulator and, using a foam solution or the like, check:• the tightness of the external surfaces of the regulator and of the pilot;• the tightness of the internal surfaces of the regulator and of the pilot;• the tightness of the connection fittings.

2) Open a bleed cock downstream from the regulator to create a small gas flow.3) Turn the pilot setting screw, pos. , to obtain the desired set-point.4) Close the bleed cock.

8.2 START UP

1) Very slowly open the downstream on/off valve and, if necessary, adjust the regulator setting by alternatelyadjusting the AR73 valve and the 30/... pilot.

2) Fix the lock-nut, pos. of the pilot.

61

9

10


Tab. 17 MAINTENANCE WRENCHES APERFLUX 851 PRESSURE REGULATORS WITH 30.../A PILOT ANDAR73

Combination spanner Adjustable spanner Compass pin wrench

Box spanner Hexagon or allen key Hexagonal T key

Hexagonal socket T wrench Phillips screwdriver Flat head screwdriver

O-Ring extraction tool Circlip pliers Fiorentini special socket

Fiorentini special tool

A

D

G

L

O

B

E

H

M

C

F

I

N

Type DN 1” 2” 3” 4” 6” 8” 10”14-17-19 14-17-19 14-17-19 14-17-19 14-17-19 14-17-19 14-16-17

A Ch. 24-27 24-27 24-27-32 24-27-32 24-27-30 24-27-32 19-24-2732-36

B L. 300C ø 4F Ch. 5-6 5-6 5-6-10 5-6-14 5-6-17 5-6-17 4-5-6-17I L. 6,5 x 100L Cod. 7999099AP

ERFL

UX 8

51

Type DN 1” 2” 3” 4” 6” 8” 10”13-14-15 13-14-15 13-14-15 13-14-15 13-14-15 13-14-15 13-14-15

A Ch. 17-19-24 17-19-24 17-19-24 17-19-24 17-19-24 17-19-24 17-19-2427-30 27-30 27-30-32 27-30-32 27-30-32-41 27-30-32-41 27-32-46-50

B L. 300C ø 4D Ch. 27-41 27-41 30-41-55E Ch. 3-12 3-12 3-12 3-12 3-12 3-12 3-12F Ch. 5-6 5-6 5-6-10 5-6-14 5-6-17 5-6-17 4-5-6-17G Ch. 9-17-20 9-17-20 9-17-19-22 9-17-19-22 9-22 9-22I L. 6,5 x 100

L Cod. 7999099APER

FLUX

851

+PM

/819

62

63

Type DN 1” 2” 3” 4” 6” 8” 10”14-17-19 14-17-19 14-17-19 14-17-19 14-17-19 14-17-19 14-16-17

A Ch. 24-27 24-27 24-27-32 24-27-32 24-27-30 24-27-32 19-24-2732-36

B L. 300C ø 4F Ch. 5-6 5-6 5-6-10 5-6-14 5-6-17 5-6-17 4-5-6-17I L. 6,5 x 100L Cod. 7999099O Cod. 7999020 7999022 7999023 7999024 7999025 7999027 7999028AP

ERFL

UX 8

51+D

B/85

1

Type DN 1” 2” 3” 4” 6” 8” 10”8-13-14 8-13-14 8-13-14 8-13-14 8-13-14 8-13-14 8-13-14

A Ch. 15-17-19 15-17-19 15-17-19 15-17-19 15-17-19 15-17-19 15-16-1724-27-32 24-27-32 24-27-32 24-27-32 24-27-30-32 24-27-32 19-24-32-36-41

B L. 300C ø 4D Ch. 9-10-15-24 9-10-15-24 9-10-15-24 9-10-15-24 9-10-15-24 9-10-15-24 27E Ch. 2-3-4-8 9-10-15-24 9-10-15-24 9-10-15-24 9-10-15-24 9-10-15-24 27F Ch. 2-3-4-8 2-3-4-10 2-3-4 2-3-4 2-3-4 2-3-4 2-3-4I L. 6,5 x 100

L Cod. 7999099M ø 19 ÷ 60N Cod. 7999019AP

ERFL

UX 8

51+S

B/82


Tab. 18 MAINTENANCE WRENCHES FOR APERFLUX 851 PRESSURE REGULATORS WITH 30.../A PILOTAND AR73

Combination spanner Adjustable spanner Compas pin wrench

Box spanner Hexagon or allen key Hexagonal tee key

Hexagonal socket T wrench Phillips screwdriver Flat head screwdriver

O-Ring extraction tool Circlip pliers Fiorentini special socket

Fiorentini special tool

A

D

G

L

O

B

E

H

M

C

F

I

N

64


9. 0 WEIGHT OF THE COMPONENTS

9.1 TAB. 19 WEIGHT OF THE COMPONENTS IN KG.

1” 2” 3” 4” 6” 8” 10”

2,750 4,200 11 16 36 82 142

0,300 0,300 0,650 1,200 2,100 2,800 5,300

2,500 3,950 10,200 16,200 32 52 80

- - 6,200 8,500 20,900 48 988

0,150 0,400 0,760 1 1,700 2,200 2,700

9,400 20,500 37 66 148 234 385

0,650 1,700 4,100 6,400 11,900 22,600 32

0,050 0,200 0,400 0,650 1,900 2,900 2,900

0,090 0,150 0,250 0,600 0,700 0,800 1,200

1,300 3 5,700 10,400 19,700 35 78

DN

65


10.0 LIST OF RECOMMENDED SPARES

66


APERFLUX 851 PRESSURE REGULATOR

DN: 1” - 2”Fig. A

67


VERSION

1” - 2” 3” ÷ 10”

20 Diaphragm 1 1

37 O. Ring 2 2

38 O. Ring - 1

39 O. Ring 1 1

40 O. Ring 1 1

N. OF PIECES DN

POS. DESCRIPTION

APER

FLUX

851

VERSIONDN: 3 ÷ 10”

Fig. B

68


APERFLUX 851 PRESSURE REGULATOR + DB/851

DN: 1” - 2”Fig. C

69


VERSIONS

1” - 2” 3” - 4” 6” 8” 10”

DB 851 DB 886 DB 851 DB 886 DB 851 DB 886 DB 851 DB 886 DB 851 DB 886

70 Copper 8 12 12 4 12 8 16 12 - -81 O. Ring 2 2 2 2 2 2 2 2 2 283 O. Ring 1 1 1 1 1 1 1 1 1 184 O. Ring 1 1 1 1 1 1 1 1 1 185 O. Ring - - - - - - - - 1 187 Gasket - - 1 1 1 1 1 1 - -88 Gasket 2 2 2 2 1 1 1 1 1 191 O. Ring 1 1 1 1 - - - - - -

N. OF PIECES DN

POS. DESCRIPTION

…+

DB/8

51

VERSIONDN: 3” ÷ 8”

Fig. D

VERSIONDN: 10”Fig. E

70


PM/819 MONITOR

DN: 2”

71


VERSIONS


VERSIONDN: 1”

VERSIONDN: 10”

VERSIONDN: 3” - 4”


72


1” ÷ 4” 6” - 8” 10”

12 O. Ring - - 236 O. Ring 3 3 339 O. Ring 2 2 240 O. Ring 1 1 141 O. Ring 1 1 142 O. Ring 1 1 143 O. Ring 1 1 144 O. Ring 1 2 245 O. Ring 1 1 147 O. Ring 1 1 150 Diaphragm 1 1 151 Guide ring 1 1 187 O. Ring - 1 188 O. Ring 1 1 1

N. OF PIECES DN

POS. DESCRIPTION

...+

PM/8

19

73


… + SB/82 SLAM-SHUT

VERSIONS

VERSIONDN: 1”

VERSIONDN: 3” - 4” - 6” - 8”

DN: 2”

74


VERSIONS

VERSIONDN: 4” - 6” - 8”

VERSIONDN: 10”

75


VERSIONS

VERSION

DN: 1” ÷ 4”VERSION

DN: 1” ÷ 4”

SECTIONA - A

SECTIONB - B

VERSION

DN: 6” - 8” - 10”

VERSION

DN: 6” - 8” - 10”


76

CONTROL DEVICE

Mod.: 102 - 103 - 104 - 105

Mod.: 106 - 107 - 108 - 109

77


CONTROL HEADS

Mod.: 102-106 Mod.: 103-106

Mod.: 104-107 Mod.: 105-108


78

1” 2” - 3” 4” ÷ 8” 10”

19 Reinforced gasket 1 1 1 -24 Guide ring - - - 225 Guide ring 2 2 2 -40 O. Ring 1 1 1 141 O. Ring 1 1 1 142 O. Ring 2 2 2 243 O. Ring 1 - - -44 O. Ring - - 1 -45 O. Ring 1 1 1 1

N. OF PIECES DN

POS. DESCRIPTION

SB/8

2 SL

AM-S

HUT

46 O. Ring 1

N. OF PIECESPOS. DESCRIPTION

CONT

ROL

DEVI

CE

4 Membrana 1


CONT

ROL

HEAD

S

MOD. 102-103-104-105-106-107-108-109

MOD. 102-106

4 Diaphragm 112 O.Ring 1


CONT

ROL

HEAD

S

MOD. 103

4 O.Ring 111 O.Ring 112 O.Ring 1


CONT

ROL

HEAD

S

MOD. 104 - 105 - 107 - 108 - 109


79

HB 97 SLAM-SHUT DEVICE

DN: 4”


80

4” 6” 8” 10”

7 Reinforced gasket 1 1 1 136 O. Ring 3 3 3 339 O. Ring 1 1 1 140 O. Ring 1 1 1 141 O. Ring 1 1 1 142 O. Ring 1 1 1 143 O. Ring 1 1 1 147 O. Ring 1 1 1 151 Guide ring 1 1 1 162 O. Ring 2 2 2 263 GACO ring 1 1 1 164 Guide ring 1 1 1 187 O. Ring - 1 1 188 O. Ring 1 1 1 193 O. Ring 1 1 1 1

N. OF PIECES DN

POS. DESCRIPTION

HB/9

7 SL

AM-S

HUT

VALV

E

VARIANTE

DN: 6” - 8” - 10”


81

LINE OFF DEVICE

PART. A Three-ways valvePART. B FilterPART. C Pressure regulatorPART. D Relief valvePART. E Slide valvePART. F Control device


82

PART. B

FILTER

4 Filter cartridge 17 O. Ring 18 O. Ring 1

N. OF PIECES POS. DESCRIPTION

FILT

ER

PART. B

2 Plug 1

N. OF PIECES POS. DESCRIPTION

RELI

EF V

ALVE

PART. D

PART. D

RELIEF VALVE


83

Part. F

CONTROL DEVICE

Mod.: 103-104-105

Mod.: 105/92


84

Mod.: 103

4 Diaphgram 1


CONT

ROL

HEAD

4 O. Ring 1


CONT

ROL

HEAD

S

Mod.: 104-105

MOD. 103

MOD. 103-105

85


PILOTS MOD. 302/A-304/A + AR73 FLOW REGULATION VALVE

Fig. B

302/A

Fig. A

86



2 O. Ring 15 Diaphragm 16 O. Ring 111 Filter 112 O. Ring 114 O. Ring 118 O. Ring 1

AR73

AR73 FLOW REGULATION VALVE

302/A Pilot 304/A Pilot

16 Diaphragm 2 217 Obturator 1 118 O. Ring 1 128 O. Ring 1 129 O. Ring 1 149 Diaphragm 1 -50 O. Ring 1 151 O. Ring 1 152 O. Ring 1 153 O. Ring 1 -54 O. Ring 1 -55 O. Ring 1 158 O. Ring 1 1


PILO

T

87


204/A PILOT

204/A 205/A 204/A/2/CS 204/A/1/CS 204/A/MO

11 O. Ring 1 1 1 1 116 Diaphragm 2 2 3 3 217 Obturator 1 1 1 1 118 O. Ring - - - - 128 O. Ring 1 1 1 1 129 O. Ring 1 1 1 1 138 O. Ring 1 1 1 1 140 O. Ring - - 1 - -41 O. Ring - - 1 - -


88


R14/A PREREGULATOR

8 Guide ring 19 Reinforced gasket 110 Diaphragm 113 Filter 117 O. Ring 118 O. Ring 219 O. Ring 120 O. Ring 1


INLET DOWNSTREAM PRESSURE

PILOT FEED

89


WHEN ORDERING SPARE PARTS, PLEASE SPECIFY:

FOR REGULATORS

Type of regulatorDne (nominal input diameter)Pe (inlet pressure)Pa (outlet pressure)Works no. (Serial no.)Year of manufactureType of fluid usedSlam-shut (if assembled)Type of control headThe no. of the part (position no.)Quantity desired

FOR PILOTS

Type of pilotPe (inlet pressure)Operating PressureWorks no. (Serial no.)Year of manufactureType of fluid usedThe no. of the part (position no.)Quantity desired


The data are not binding. We reserve the right to make modifications without prior notice.

Pietro Fiorentini S.p.A.

OFFICES:

I-20124 MILANO Italy - Via Rosellini, 1 - Phone +39.02.6961421 (10 linee a.r.) - Fax +39.02.6880457 E-mail: [email protected]

I-36057 ARCUGNANO (VI) Italy - Via E. Fermi, 8/10 - Phone +39.0444.968511 (10 linee a.r.) - Fax +39.0444.960468 E-mail: [email protected]

I-80049 SOMMA VESUVIANA (NA) Italy - Via Cupa Fasano, 80 - Phone +39.081.8991965 - Fax +39.081.8991915E-mail: [email protected]

SPARE PARTS AND AFTER-SALES SERVICE:

I-36057 ARCUGNANO (VI) Italy - Via E. Fermi, 8/10 - Phone +39.0444.968511 (10 linee a.r.) - Fax +39.0444.968513 - E-mail: [email protected]

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